[seqfan] Re: Sequence from buggy polyomino counter

Hugo Pfoertner yae9911 at gmail.com
Fri Dec 21 12:39:40 CET 2018

Not very serious: My guess: 8*A279651 <http://oeis.org/A279651>(5) = 8*2232
= 17856


On Fri, Dec 21, 2018 at 5:20 AM Allan Wechsler <acwacw at gmail.com> wrote:

> I was trying to sharpen my Haskell skills by writing a program to compute
> A048664, the number of different polyominos including the origin cell,
> where rotations, translations, and reflections are considered distinct.
> I wrote the code, compiled it a couple of times to get the syntax errors
> out, and then tried it out. It has a bug. Instead of 1, 4, 18, 76, 315, it
> produces 1, 4, 24, 192, 1856.
> My first impulse was: fix the darned bug! But then I thought: wait a
> second, maybe OEIS can help me find the bug. So I searched for the programs
> buggy output sequence.
> It's not in OEIS. Question: how much effort should I put into analyzing the
> program's actual behavior? It might be doing something interesting that is
> worth including. If anybody wants to try guessing, what's the next element?
> --
> Seqfan Mailing list - http://list.seqfan.eu/

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